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Generates sample IMEI numbers that can be used for software testing and demonstrations.

ISSN National Centre for Peru

bnp.gob.pe

Numbering agency for periodicals and other serials published in Peru.

Numbering agency for periodicals and other serials published in Spain.

A Python implementation of a number of popular recommendation algorithms for both implicit and explicit feedback.

Database on corporations designated by corporate numbers, operated by the National Tax Agency of Japan.

Creates sample UK National Insurance Numbers for testing forms and software systems.

Bibliographic database of literature published in penny weekly numbers in London between 1837 and 1860.

Browser tool for testing RSA encryption, decryption, key values, and prime-number calculations.

Generates sample Canadian Social Insurance Numbers for testing applications and forms.

Generates fictional Social Security Numbers for application testing and development examples.

🔭TeleSpot OSINT lookup from Telephone number using DDGR + BING + GOOGLE + DEHASHED and uses pattern recognition correlations. NOW with TelespotX!

Provides fictional US identity number generators for testing forms and software applications.

Generates sample vehicle identification numbers for testing automotive databases and applications.

Ahrefs' SEO Toolbar

chrome.google.com

Ahrefs' SEO Toolbar crawls websites to find broken links, redirects, and technical SEO issues.

Anon.to helps open, check, secure, monitor, or manage URLs and website links.

Bly.to

blyto.com

Bly.to helps open, check, secure, monitor, or manage URLs and website links.

Bom.so helps open, check, secure, monitor, or manage URLs and website links.

Breach exposure lookup service for checking whether an email appears in known breach datasets.

By.com.vn helps open, check, secure, monitor, or manage URLs and website links.

CheckShortURL

checkshorturl.com

Expands shortened URLs and checks the destination before opening the final link.

Diff Checker

diffchecker.com

Image comparison tool for spotting visual differences between two pictures or screenshots.

ej.uz

ej.uz

ej.uz helps open, check, secure, monitor, or manage URLs and website links.

EU AI Act Compliance Checker

huggingface.co

Uses AI agents to complete tasks, coordinate tools or automate multi-step workflows.

ExpandURL expands shortened links and reveals redirect destinations before you open them.